[Incorporation of (3R,3'R)zeaxanthin in vesicles of dipalmitoyl phosphatidylcholine. Circular dichroism analysis].
The organization of carotenoids in biological membranes has been investigated by monitoring by circular dichroism the incorporation of (3R, 3'R) zeaxanthin in small unilamellar vesicles of dipalmitoyl phosphatidylcholine (DPPC). For ratios zeaxanthin/phospholipid greater than 1/30, a drastic circular dichroism increase indicates the existence of a new type of interaction between zeaxanthin and DPPC.
D055592:Biophysical Phenomena; D001703:Biophysics; D002338:Carotenoids / Q000031:analogs & derivatives* / Q000032:analysis; D002942:Circular Dichroism; D008081:Liposomes / Q000032:analysis; D008566:Membranes / Q000032:analysis; D011663:Pulmonary Surfactants / Q000032:analysis*; D024341:Xanthophylls; D065146:Zeaxanthins; D019207:beta Carotene / Q000031:analogs & derivatives*
D008081:Liposomes; D011663:Pulmonary Surfactants; D024341:Xanthophylls; D065146:Zeaxanthins; D019207:beta Carotene; D002338:Carotenoids
Incorporation de la (3R, 3'R) zéaxanthine dans des vésicules de dipalmitoyle phosphatidylcholine. Analyse par dichroisme circulaire.